{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950278,-0.311403,0.000000,0.000000,0.173770,-0.530277,0.829825,0.000000,-0.257868,0.786910,0.560605,0.000000,-1646449.272899,5024304.916450,3555418.750858,1],    "boundingVolume": {    "region": [1.887416,0.595057,1.887515,0.595174,0.000000,8.750799]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1453322.b3dm"}}}